I've been reading this over and over and w/ all of the replies and videos - I went out and purchased a set for my 2014 GMC Sierra (Extended Cab, thinking it would be an easy fit). Everything lines up (w/ a few small cuts), but the wiring in my harness is missing a few of the connections (Power [C2], # 8 & 39). I pulled power from the battery, but when I went to find # 8 & 39, they were both missing as well. I can do the rest of the wiring to the boards, but where do these need to go to ?
Thanks for your help !!
I think I'm going to be reaching out to Phil ....